diff --git a/docs/community.rst b/docs/community.rst
index bf1cd1c..2b7cdc6 100644
--- a/docs/community.rst
+++ b/docs/community.rst
@@ -17,4 +17,4 @@
 .. _`Source code`: https://github.com/pyca/cryptography
 .. _`Issue tracker`: https://github.com/pyca/cryptography/issues
 .. _`Documentation`: https://cryptography.io/
-.. _`Python Community Code of Conduct`: http://www.python.org/psf/codeofconduct/
+.. _`Python Community Code of Conduct`: https://www.python.org/psf/codeofconduct/
diff --git a/docs/conf.py b/docs/conf.py
index b70114d..fc16b38 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -268,6 +268,6 @@
 # texinfo_show_urls = 'footnote'
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'http://docs.python.org/': None}
+intersphinx_mapping = {'https://docs.python.org/': None}
 
 epub_theme = 'epub'
diff --git a/docs/development/c-bindings.rst b/docs/development/c-bindings.rst
index 10d5fc1..993a4ab 100644
--- a/docs/development/c-bindings.rst
+++ b/docs/development/c-bindings.rst
@@ -3,7 +3,7 @@
 
 C bindings are bindings to C libraries, using cffi_ whenever possible.
 
-.. _cffi: http://cffi.readthedocs.org
+.. _cffi: https://cffi.readthedocs.org
 
 Bindings live in :py:mod:`cryptography.hazmat.bindings`.
 
diff --git a/docs/hazmat/backends/openssl.rst b/docs/hazmat/backends/openssl.rst
index e829798..b48e502 100644
--- a/docs/hazmat/backends/openssl.rst
+++ b/docs/hazmat/backends/openssl.rst
@@ -78,5 +78,5 @@
 
 .. _`OpenSSL`: https://www.openssl.org/
 .. _`initializing the RNG`: https://en.wikipedia.org/wiki/OpenSSL#Predictable_keys_.28Debian-specific.29
-.. _`Yarrow`: http://en.wikipedia.org/wiki/Yarrow_algorithm
+.. _`Yarrow`: https://en.wikipedia.org/wiki/Yarrow_algorithm
 .. _`Microsoft documentation`: http://msdn.microsoft.com/en-us/library/windows/desktop/aa379942(v=vs.85).aspx
diff --git a/docs/hazmat/bindings/openssl.rst b/docs/hazmat/bindings/openssl.rst
index a6d1c48..36255b5 100644
--- a/docs/hazmat/bindings/openssl.rst
+++ b/docs/hazmat/bindings/openssl.rst
@@ -46,4 +46,4 @@
 
 .. _`CFFI`: https://cffi.readthedocs.org/
 .. _`OpenSSL`: https://www.openssl.org/
-.. _`thread safety facilities`: http://www.openssl.org/docs/crypto/threads.html
+.. _`thread safety facilities`: https://www.openssl.org/docs/crypto/threads.html
diff --git a/docs/hazmat/primitives/asymmetric/rsa.rst b/docs/hazmat/primitives/asymmetric/rsa.rst
index a5cebb1..6c96090 100644
--- a/docs/hazmat/primitives/asymmetric/rsa.rst
+++ b/docs/hazmat/primitives/asymmetric/rsa.rst
@@ -271,4 +271,4 @@
 .. _`use 65537`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html
 .. _`at least 2048`: http://www.ecrypt.eu.org/documents/D.SPA.20.pdf
 .. _`OpenPGP`: https://en.wikipedia.org/wiki/Pretty_Good_Privacy
-.. _`Chinese Remainder Theorem`: http://en.wikipedia.org/wiki/RSA_%28cryptosystem%29#Using_the_Chinese_remainder_algorithm
+.. _`Chinese Remainder Theorem`: https://en.wikipedia.org/wiki/RSA_%28cryptosystem%29#Using_the_Chinese_remainder_algorithm
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index d964f25..d87e8d6 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -9,7 +9,7 @@
 this information to influence their operation. Interfaces should also be used
 to document argument and return types.
 
-.. _`Abstract Base Classes`: http://docs.python.org/3.2/library/abc.html
+.. _`Abstract Base Classes`: https://docs.python.org/3/library/abc.html
 
 
 Symmetric ciphers
@@ -752,5 +752,5 @@
 .. _`Chinese remainder theorem`: https://en.wikipedia.org/wiki/Chinese_remainder_theorem
 .. _`DSA`: https://en.wikipedia.org/wiki/Digital_Signature_Algorithm
 .. _`CMAC`: https://en.wikipedia.org/wiki/CMAC
-.. _`ECDSA`: http://en.wikipedia.org/wiki/ECDSA
-.. _`EdDSA`: http://en.wikipedia.org/wiki/EdDSA
+.. _`ECDSA`: https://en.wikipedia.org/wiki/ECDSA
+.. _`EdDSA`: https://en.wikipedia.org/wiki/EdDSA
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index 586285b..b21ef61 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -510,6 +510,6 @@
 .. _`Communications Security Establishment`: http://www.cse-cst.gc.ca
 .. _`encrypt`: https://ssd.eff.org/tech/encryption
 .. _`CRYPTREC`: http://www.cryptrec.go.jp/english/
-.. _`significant patterns in the output`: http://en.wikipedia.org/wiki/Cipher_block_chaining#Electronic_codebook_.28ECB.29
+.. _`significant patterns in the output`: https://en.wikipedia.org/wiki/Cipher_block_chaining#Electronic_codebook_.28ECB.29
 .. _`International Data Encryption Algorithm`: https://en.wikipedia.org/wiki/International_Data_Encryption_Algorithm
 .. _`OpenPGP`: http://www.openpgp.org